Geoege j



(No Model.)

G. J. MURDOGK.

SAD IRON.

(g4/IQ] DePentented/Iar.20,1888.

GEORGE J. MURDOCK, OF NEV YORK, N. Y.

SAD-IRON.

SPECIFICATION forming part of Letters Patent No. 379,804. dated March 20, 1888.

Application filed February 7, 1887. Serial No. 226.760. (No model.)

To all whom, it may concern,.-

Beit known that I, GEORGE J. MURDoeK, of the city and State of New York, have invented an Improvement in Sad-Irons, of which the following is a specification.

This invention is an improvement upon that set forth in the patent, No. 356,881, granted February 1,1887, to G. J. Murdock and J. P. Murdock. In this patent a bell is provided with an external arm and hammer that is rung by the action of a thermostat; but the arm of the hammer is liable to'beinjured by heatand to be broken in the rough usage to which sadirons are often exposed. In my present improvements the hammer is within the bell and protected by it, and there is a separate visualsignal that indicates when the hammer is set, and also shows when the bell has been rung, and this hammer is self-acting, and it swings into position by the ordinary movement of the sad-iron while being used, so as to be set when the iron is placed on the fire, and thishammer is unlatched by the action of the heat and causes the clapper to strike the bell; and the removable shank of the wooden handle is provided with a catch that prevents the handle from accidentally becoming disconnected while in use.

ln the drawings, Figure l is a vertical section at the line a: x, Fig. 2, showing my improvements. Fig. 2 is a plan view with the bell removed and the stock of the handle in section at the line y y, and Fig. 3 is a front elevation of the hammer and latch. Fig. 4 is a section at x x through the handle, and Fig. 5 is a section at y y.

The sad-iron a is of any desired size and shape, and upon the front part of this rises the stock Z, having a head, m, that is provided with a slightly-tapering hole for the reception of the metal shank 6 of the wooden handle a, and around the shank 6 is a conical collar, 7, having several notches in it, preferably four. Upon the top of the head m is a pivot, 2l, and a latch, 22, having an enlarged head, 20, as seen in Figs. 4 and 5, so that when the shank 6 has been inserted into the opening in the head m the latch 22 catches int-o one of the notches in the conical collar, and the head holds the collar so that the handle will not become detached accidentally; but when the latch 22 is raised by the thumb or finger placed under the projecting end or arm of said latch the handle can be drawn back and removed.

The stock l is preferably nearly a quarter sphere and hollow, so that the bell B is partially received within the same, and it is suspended from the stock by a screw passing through the tongue or strap 23.

The thermostat II is of any desired character. It is preferably of two dissimilar strips of metal riveted together and secured to the top of the sad-iron by the screws 2, and the expansion under the action of the heat causes the loose end of the thermostat, which is be neath thebell, to rise up; and there is a mortise through the stock Z, that allows for the passage of the thermostat; and at the end of the thermostat and below the bell there is a latch, E, pivoted at 24, and provided with an adjusting-screw, 25, by which the point of the latch can be raised or lowered.

The hammer F is pivoted at 26, at its lower end, preferably to the removable base D, which is attached by the screw W in a recess formed in the front part of the sad-iron. Projecting from this hammer F is the visual-signal V, and there is a suitable stop, U, behind the hammer to prevent it swinging too far toward the end of the thermostat. This visualsignal V is in the form of a wire within a vertical slot at the front part of the sad-iron, and it limits the fall of the hammer, and also indicates which bell has been rung when there are a number of sad-irons on the stove. It will now be understood that the thermostat has only to carry the weight of the latch E, and hence said thermostat responds freely to differences in the temperature, and that the hammer F is held back by the latch E as soon as the iron cools sufciently for the latch E to descend, because as the iron is rubbed back and forth upon the fabric the hammer F will swing upon its pivot until the latch E descends and holds the hammer, and in this position the signal V will be raised to indicate that the hammer is properly set. When the thermostat is sufficiently warm to unlatch the hammer F, it falls forward by its own Weight,

aided by the leverage of the signal V, and the bell may be struck by the hammer itself or by any suitable clapper. I prefer to make use of the clapper G, pivoted at 30 to the plate D, and having a head that will strike the rim of the bell; and there is aprojection, J, upon the hammer F, that strikes the clapper to swing the same and ring the bell.

rlhe lower end of the clapper G is preferably slotted for the signal V to pass through freely, and the upper end of the hammer F is by preference'forked, so that the latch E is between the two sides of the fork.

The parts of the alarm apparatus are strong and not liable to injury, and whenever the heat of the iron reaches such a point that the thermostat unlatches the hammer F it falls and the alarm is given by ringing the bell. The hammer F occupying almost a perpendicnlar position, the Weight thereof rests upon the pivot 26, and there is very little friction betweenl the end of the latch E and the harn-l mer F; hence there is but little resistance to the movement of the thermostat and the latch; and when the iron has been used a short time the end of the latch E will catch the hammer vF as it is thrown into the path of the latch by the swinging movement aforesaid, and the thermostat is free to resume its normal state.

I claim as my invention-- l. The combination, with the sad-iron and the thermostat thereon, of a latch, a pivot to connect the latch to the thermostat, a screw to adj ust the latch, a hammer held by the latch and liberated by the thermostat, and abell to be rung by the hammer, substantially as set forth.

2. The combination, with the sad-iron and its stock, of a bell fastened at the upper part to the stock, atherrnostat attached to the upper surface of the iron, a latch upon the thermostat, a pivoted hammer below and within the bell and held by the latch, and a visualsignal connected with the hammer and ex tending outside the -bell, so as to indicate Whether such hammer is held by the latch or not, substantially as set forth.

3. The combination, with the sad-iron, the thermostat, and the bell, of a latch connected with the thermostat, a pivoted hammer, and a pivoted clapper, against which the hammer acts to cause it to strike t-he bell, substantially as set forth.

4. The combination, with the sad-iron and its stock, of a bell suspended by its upper part from the stock, a thermostat upon the iron, and a hammer within and protected by the bell and liberated by the expansion ol' the thermostat, substantially as set forth.

vSigned by me this 3d day of February, A. D. 1887.

GEO. J. MURDOCK.

Witnesses:

J EANNETTE l?. MURDocK, WM. B. KING. 

